-20-AIR FILTERThe adequate performance and durability of the various enginecomponents (connecting rod, piston, piston rings, crank bearings,even the cylinder) depend to a great extent on the air filter beingclean and properly lubricated.WARNINGAlways clean the filter in an area that is properly ventilated and freefrom sparks or flames in the vicinity (this includes any powerful lightsources). Do not use petrol to clean the filter, as this might causean explosion.(A). Air filter box.To access the filter, remove the cap on the filter-housing, which hasbeen placed on the left-hand side of the moped.Upon removal of the cap, check the condition of the filter housing,wash the filter if it is dirty, and then lubricate it. To lubricate the filter,apply a few drops of oil to soak the foam and press it with one handwithout twisting it, then make sure to replace it correctly in its housing;otherwise, unfiltered air might reach the carburettor and cause seriousdamage to the moped.SPARKING-PLUG CHECK(C). Spark plugremoved from thevalve cover.(C)(B). Air boxsituation.(B)(A)